ITAL0RAGEJ5. 



127 



generally obovate. 



water. 



a. or p. 4-9. Stagnant 



2. stag'nalis. LobesofFr. slightly winged. 

 Styles reflexcd on the fruit. Bracts falcate. 

 a. or p. 5-9. Stagnant water. 



a. All L. obovate. Lobes of Fr. steUately 

 divergent. 



/3. ptatgcarpa. Lower L. lineal". Lobes of 

 Fr. parallel. 



3. hamulata. Lower L. linear 

 obovate. Fr. 

 very long, divaricate, 

 hooked at top. p 



upper 

 Styles 

 Bracts circinnate, 

 Still water. — Koch. 



winged on the angles. 



4. pedunculata. Lower L. linear ; upper 

 oblong, 3-ncrvcd. Lobes of Fr. obtusely keeled. 

 Styles reflexcd on fruit. Bracts 0. a. 6. Still 



water. 



5. autumnalis. L. all 1 -nerved, broadest 

 at base, truncate. Fr. sessile. Lobes stellately 

 divergent, broadly and acutely winged at back. 

 Bracts 0. a. 6-10. Still loater. According 

 to Koch, all the species are perennial. 



234. HIPPURIS. 



1. vulgaris. L. linear, 6-10 in a whorl. 

 p. 7. Still water. Not in Sic. 



XXXV. CEEATOPHYLLEiE. 



Flowers monoecioTis, inconspicuous. Perianth single, many-cleft. Anthers 12-20, sessile, with 

 2 cells and 2 points. Fruit with 1 cell and 1 pendulous seed. 



235. CERATOPHYLLUM. 



1. submersuMi. L. dichotomous. (Mar- 

 gin of Cal. notched at the end, Bab.) Fr. 

 oval, naked at base, terminated by the very 

 short, curved style, p. 6, 7- Still water, n. 

 and m. Eui'ope. occ. 



2. demersum. L. dichotomous. (Seg- 



ments of Cal. acute, entii-e, Bab.) Fr. oval, 

 with 2 recurved spines at base, and terminated 

 by a cm-ved, subulate style, as long as fi-uit. p. 

 7, 8. Still water. 



3. platyacanthum. L. dichotomous. Fr. 

 obovate, with 2 spines at the base and an in- 

 termediate wing 1 on each side. p. 7, 8. Still 

 water. Berlin. Nancy. 



XXXVI. LYTHEAEI^. 



Calyx inferior. Petals, if any, seated above the stamens, on the top of the tube of the calyx. 

 Germen of 2 or 4 cells. Seeds munerous, on a central placenta. 



236. SUFFRENIA. 



1. fiiiformis. Stem creeping. L. opposite, 

 sessUe, elliptic. Fl. solitary, axillary, sessile. 

 a. 8, 9. nice grounds. Vale of Po. 



237. PEPLIS. 



1. Portula. L. opposite, obovato-subro- 

 tund, attenuate. Fl. axillary, sohtary. Fr. 

 globose, a. 6-9. Wet. 



2. nummulariifolia. L. nearly all op- 

 posite, obovate. Fl. axillary, soKtary. Fr. 

 ovoid, a. 6. Marshy, mdt. Fr. Cors. Sard. 



3. Borsei. L. alternate, oblongo-obovate. 

 Fl. axillary, sohtary. Fr. globose, a. Inun- 

 dated. Nantes. Angers. — Jordan. 



4. Timeroyi. L. alternate, obovate. Fl. 



axUlaiy, solitary. Fr. ovoid. < 

 pools. Rhone. — Jordan. 



238. AMMANNIA. 



Sides of 



1. verticillata. Stem erect, 4-edged. L. 

 lanceolate, nearly sessUe. Fl. whorled, crowded, 

 sessile. Caps, not exceeding calyx, a. 6, 7- 

 Wet. n. It. 



289. LYTHRUM. 



A. Stamens fewer than 10. Flowers^ axil- 

 lary, solitary (except in 3). 



1. thymifolia. Stamens 2. Pet. 4. Fl. 

 in short, erect racemes. L. alternate, linear. 

 Bracts leaiy, obovate. a. 5, 6. Marshes. 

 mdt. Fr. Mantua. Pisa. Sardinia. Calabria. 



2. hyssopifolia. Stamens 5, 6. Pet. 6. 



